What is the constant "B" in equation in the equation relating to absorption coefficient to incident photon energy:
ahv = B(hv-Eg)1/2
a-absorption coefficient
hv-incident photon energy
Eg-band gap of the material
B- constant
In any scientific papers, generally people used to mention, B is a constant? What time of constant it is? What does this constant meant for?
Thanks in advance.